tessl/pypi-six

Python 2 and 3 compatibility utilities

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Moves Module

Name: tessl/pypi-six
Author: tessl

The six.moves module provides unified access to standard library modules and functions that were moved or renamed between Python 2 and 3. It supports 70+ relocated imports through a lazy loading system that dynamically maps old Python 2 locations to new Python 3 locations.

Capabilities

Main Moves Module

The central module object that provides access to all relocated imports.

moves: ModuleType  # Main moves module providing access to relocated imports

Usage Examples:

import six

# Access relocated modules
from six.moves import urllib
from six.moves import configparser
from six.moves import queue

# Use as module attributes  
http_client = six.moves.http_client
builtins_module = six.moves.builtins

Dynamic Move Management

Functions to add or remove items from the moves module at runtime.

def add_move(item: MovedAttribute | MovedModule) -> None
    """Add an item to six.moves at runtime."""

def remove_move(name: str) -> None  
    """Remove an item from six.moves by name."""

Usage Examples:

import six

# Add a custom moved attribute
custom_move = six.MovedAttribute("custom_name", "old.module", "new.module", "old_attr", "new_attr")
six.add_move(custom_move)

# Remove a moved attribute
six.remove_move("custom_name")

Available Moved Items

Standard Library Modules

Core standard library modules that were renamed or reorganized:

# Import examples
from six.moves import builtins          # __builtin__ → builtins
from six.moves import configparser      # ConfigParser → configparser  
from six.moves import copyreg          # copy_reg → copyreg
from six.moves import queue            # Queue → queue
from six.moves import socketserver     # SocketServer → socketserver
from six.moves import xmlrpc_client    # xmlrpclib → xmlrpc.client
from six.moves import xmlrpc_server    # SimpleXMLRPCServer → xmlrpc.server

HTTP Modules

HTTP-related modules that were reorganized in Python 3:

from six.moves import http_client      # httplib → http.client
from six.moves import http_cookies     # Cookie → http.cookies  
from six.moves import http_cookiejar   # cookielib → http.cookiejar

urllib Package

Complete urllib package with all submodules:

from six.moves import urllib           # Complete urllib package
from six.moves.urllib import parse     # urlparse → urllib.parse
from six.moves.urllib import request   # urllib2 → urllib.request  
from six.moves.urllib import error     # urllib2 → urllib.error
from six.moves.urllib import response  # urllib2 → urllib.response
from six.moves.urllib.parse import urlparse, urljoin, quote
from six.moves.urllib.request import urlopen, Request

Tkinter Modules

Complete Tkinter GUI framework modules:

from six.moves import tkinter                    # Tkinter → tkinter
from six.moves import tkinter_dialog            # tkSimpleDialog → tkinter.simpledialog
from six.moves import tkinter_filedialog        # tkFileDialog → tkinter.filedialog
from six.moves import tkinter_scrolledtext      # ScrolledText → tkinter.scrolledtext
from six.moves import tkinter_simpledialog      # tkSimpleDialog → tkinter.simpledialog
from six.moves import tkinter_tix               # Tix → tkinter.tix
from six.moves import tkinter_ttk               # ttk → tkinter.ttk
from six.moves import tkinter_constants         # Tkconstants → tkinter.constants
from six.moves import tkinter_dnd2              # Tkdnd → tkinter.dnd
from six.moves import tkinter_tkfiledialog      # tkFileDialog → tkinter.filedialog
from six.moves import tkinter_tksimpledialog    # tkSimpleDialog → tkinter.simpledialog
from six.moves import tkinter_tkcolorchooser    # tkColorChooser → tkinter.colorchooser
from six.moves import tkinter_tkcommonDialog    # tkCommonDialog → tkinter.commondialog
from six.moves import tkinter_messagebox        # tkMessageBox → tkinter.messagebox
from six.moves import tkinter_font              # tkFont → tkinter.font

Email MIME Modules

Email MIME handling modules:

from six.moves import email_mime_base          # email.MIMEBase → email.mime.base
from six.moves import email_mime_image         # email.MIMEImage → email.mime.image
from six.moves import email_mime_multipart     # email.MIMEMultipart → email.mime.multipart
from six.moves import email_mime_nonmultipart  # email.MIMENonMultipart → email.mime.nonmultipart
from six.moves import email_mime_text          # email.MIMEText → email.mime.text

Built-in Functions and Types

Individual functions and types that moved:

from six.moves import filter           # Built-in filter (returns iterator in PY3)
from six.moves import input            # raw_input → input
from six.moves import map              # Built-in map (returns iterator in PY3)  
from six.moves import range            # xrange → range
from six.moves import zip              # izip → zip
from six.moves import zip_longest      # izip_longest → zip_longest
from six.moves import reduce           # Built-in reduce moved to functools

Utility Functions and Classes

Various utility functions and classes:

from six.moves import cPickle          # cPickle → pickle (C implementation)
from six.moves import reload_module    # reload built-in → importlib.reload
from six.moves import shlex_quote      # pipes.quote → shlex.quote
from six.moves import UserDict         # UserDict → collections.UserDict
from six.moves import UserList         # UserList → collections.UserList  
from six.moves import UserString       # UserString → collections.UserString
from six.moves import getcwd           # os.getcwd
from six.moves import getcwdb          # os.getcwdb

Lazy Loading Infrastructure

MovedAttribute Class

Descriptor class for individual moved attributes within modules.

class MovedAttribute:
    """Descriptor for moved attributes."""
    def __init__(
        self, 
        name: str, 
        old_mod: str, 
        new_mod: str, 
        old_attr: str | None = None, 
        new_attr: str | None = None
    )

Parameters:

name: Name to use in six.moves
old_mod: Python 2 module name
new_mod: Python 3 module name
old_attr: Python 2 attribute name (defaults to name)
new_attr: Python 3 attribute name (defaults to name)

MovedModule Class

Descriptor class for entire moved modules.

class MovedModule:
    """Descriptor for moved modules."""
    def __init__(self, name: str, old: str, new: str | None = None)

Parameters:

name: Name to use in six.moves
old: Python 2 module name
new: Python 3 module name (defaults to old)

urllib Submodule Classes

Specialized lazy loader classes for urllib submodules:

class Module_six_moves_urllib_parse      # Lazy loader for urllib.parse
class Module_six_moves_urllib_error      # Lazy loader for urllib.error
class Module_six_moves_urllib_request    # Lazy loader for urllib.request
class Module_six_moves_urllib_response   # Lazy loader for urllib.response
class Module_six_moves_urllib_robotparser # Lazy loader for urllib.robotparser
class Module_six_moves_urllib            # Lazy loader for complete urllib package

These classes provide the implementation for the urllib submodule lazy loading system, allowing fine-grained access to urllib functionality across Python versions.

Common Usage Patterns

# Standard library imports
import six
from six.moves import urllib, configparser, queue

# HTTP operations
from six.moves.urllib.request import urlopen
from six.moves.urllib.parse import urljoin, urlparse

response = urlopen('http://example.com')
parsed = urlparse('http://example.com/path')

# Configuration parsing
config = configparser.ConfigParser()

# Queue operations  
q = queue.Queue()

# Built-in function usage
from six.moves import filter, map, zip
result = list(filter(lambda x: x > 0, [-1, 0, 1, 2]))
mapped = list(map(str, [1, 2, 3]))
pairs = list(zip([1, 2, 3], ['a', 'b', 'c']))

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